Understanding Accounting
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Misconception · MIS:final-period-plug-proves-effective-interest

Mistaken idea “A final-period plug proves effective interest”

Mistaken reasoning: This mistake overrides the last amortization amount so the schedule reaches face, masking a rate, timing, or precision error.

Updated Aug 21, 2026 Review due Nov 8, 2026

Why this is mistaken

Retain full precision, recompute the rate and timing, and disclose any explicit cent-rounding convention. A hidden plug is not a control.

Where to watch

When this mistake may appear

  • The displayed schedule misses face amount.
Check your work

Your work may contain this mistake if:

  • Set the final carrying amount to face and call the difference amortization.